Dude, something serious is going on between Miley Cyrus and Selena Gomez, and we aren't talking about a love affair. Is it just us? Or is the twerking queen always dissing Justin Bieber's ex these days?

The latest Miley-doesn't-like-Selena diss came after the MuchMusic Video Awards Sunday night in Toronto. Miley's smash "Wrecking Ball" was up for International Video of the Year, but Lorde's "Royals" took home the award instead. Miley was also nominated as Favorite International Artist/Group, and the fans gave that award to Selena.

While Miley didn't deliberately call out the winners of the awards, she did tweet post-show Sunday claiming the whole thing was rigged. "Wigged woting wis wack wust wayin," she posted.

Obviously she wasn't too fond of the award show results...and the fact that she lost to Sel. Last week, Miley dissed Selena when she threw that cardboard cutout of her into the audience while singing her song "FU". Perhaps her loss just added fuel to her recent Selena-hate fire?

The people at MuchMusic even indirectly responded to Miley's tweet. They posted, "Anyone saying our voting is 'rigged' should know that we have our own reliable tracking system." They also said that both stars are winners in their hearts.

Do you think Miley's MuchMusic Awards tweet was a jab at Selena? Who do you think deserved the win?

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Gallery | These Celebs Dissed Who?!

Not cool Snoop, not cool. When Iggy Azalea was photographed going all natural at the airport, Snoop Dogg decided to share a rude meme on Instagram mocking the 25-year-old rapper. She then fired back on Twitter, "Why would you post such a mean pic on insta when you send your body guards to ask me for pictures every time we are at shows together?" But thanks to a phone call with T.I., the feud was squashed.

Amber Rose wasn't shy when she got asked about Tyga and Kylie Jenner's rumored relationship. In a radio interview, she said about Kylie, "She's a baby. She needs to go to bed at 7 o'clock. That's ridiculous. He should be ashamed of himself." Amber went on to call Kylie's sister Kim Kardashian "fake," including "She has potential to be really dope, but to me she's not." Ouch.

Forget about the Mani-Cam. At this year's OscarsFashion Police's Giuliana Rancic put her foot in her mouth with her comment about Zendaya's hair, saying it looks like it "smells like patchouli oil or weed." She's apologized since and Zendaya has accepted the apology, but we're still a little surprised she crossed that line.

Ouch. This one even hurt us a little. Jude Law's son, Rafferty, told the British newspaper, The Mail, "One Direction, I don't care what they've f**king done. Those guys don't even write their own music." Sigh, if only Rafferty listened to interviews of the 1D lads (like this one), then he'd know they did in fact write most of their latest album, Four.

Taylor Swift told Rolling Stone she wrote a diss song called "Bad Blood" about a fellow female entertainer who tried to "sabatoge an entire arena tour" by hiring people out from under her. Fans quickly assumed it was about Katy Perry, considering three of Tay's dancers left her tour to dance for KP in 2013. Then, Katy pretty much confirmed the fued with this sassy tweet. If Taylor is Mean Girls character "Regina George," does that make Katy "Cady Heron?" If so, then John Mayer is definitely "Aaron Samuels."

The lateJoan Rivers blasted Selena Gomez while leaving LAX. TMZ caught her on her way out, and asked her what she thought about celebs like Selena chiming in on the current conflict between Palestine and Israel.
"Oh, yeah, that college grad, Selena Gomez..." Joan replied. "Let's see if she can spell Palestinian."

Jennette McCurdydissed her former Sam & Cat co-star Ariana Grande in her webseries What's Next for Sarah?An annoying character named Gloriana, who's a vegan singer (just like Ariana), pops up in the series, and it's not pretty. Some tweets between Perez Hilton and Jennette seemed to confirm that the former iCarly star was indeed dissing the "Problem" singer.

When Martha Stewart was asked what she thought about Blake Livelylaunching her Preserve company, the 72-year-old told the Huffington Post, "Let her try...I don't mean that facetiously! I mean, it's stupid, she could be an actress! Why would you want to be me if you could be an actress? I just did a movie yesterday, though - I can't even tell you about it - but I want to be Blake Lively."

"The last thing I wanna do is rip on a pregnant woman because it is incredible that you can do this with your bodies, but I would be remiss to not--it's a horrible dress on her," said Kotsiopoulos. "That doesn't look like a baby bump, it looks like a beer belly. I'm sorry and I acknowledge that that's a horrible thing to say, but it's the wrong dress on this woman." Ouch!

Yup, we're still on the Bieber-diss-train. After Justin got arrested for a DUI and drag racing in Miami in January of 2014--actor Seth Rogen told his followers (and the world) how he really felt about the Biebs.

Most people (if not everyone) remember Kanye West and Taylor Swift's rather special moment they shared at the VMA's on stage in 2009, but in case you forgot, Tay will "jar" your memory. She recently gave her good friend Ed Sheeran a jar of homemade jam (which he tweeted a pic of) with a note inspired by Kanye's infamous words.

Sharon Osbourne was not shy when she was asked about Justin Bieber. Sharon shared during a recent interview that, "He wants to be a mean boy, and he's about as mean as a f**kin' kitten." And she doesn't think much of him peeing in a bucket either, saying, "F**k off! You don't know what bad is."

Sounds like Kelly Osbourne may be the next one to end up one in one of Taylor Swift's songs! Kelly recently denied a report this week that she called Tay "fake" and "only dates people for press." But two years ago, Kelly did complain, "My biggest pet peeve about Taylor is that she walks on stage in front of 25,000 people and still goes, 'Me? You're here for me?' Of course, you're Taylor Swift, get over it!'"

Taylor Swift found a bloody clever way to take a public stab at herex, Harry Styles, when she performed at the Grammys. Tay picked up a quick British accent when these lyrics came up: "So he calls me up and he's like, 'I still love you,' and I'm like, 'I'm sorry, I'm busy opening up the Grammys.'"

Seems like everyone is jumping on the Bieber diss wagon! Kid Rock slammed Justin during an interview with Howard Stern, saying, "It's just kind of sad to see him go down this trajectory. It's gonna be a very long ride down."

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